Door and window frame plug-in assembly with self-locking function

Abstract

The utility model relates to the technical field of building doors and windows, in particular to a door and window frame plug -in assembly with self -locking function, its structure is ingenious, connects firm, has automatic locking function and is convenient to install, including the plug -in piece body and self -locking piece of L or cross shape. The plug -in arm of plug -in piece body is opened and has locking hole, and the inside is equipped with the installation cavity of accommodating self -locking piece. The self -locking piece includes the locking block with trigger inclined plane and provides the elastic element of pre -tightening force. When installing, the locking block is compressed back; after plugging in place, the locking block pops out and clamps tightly under the action of the elasticity, realizes automatic locking.

Description

Technical Field

[0001] This utility model relates to the technical field of building doors and windows, and in particular to a door and window frame plug-in assembly with a self-locking function. Background Technology

[0002] Door and window frames are common components in various buildings. Typically, door and window frames are assembled by machining the beginning and end of the profiles (PVC profiles) into 45-degree beveled surfaces. The beveled ends of adjacent profiles are then joined to form a right angle. An angle bracket is then installed and glued in place, or an L-shaped connector is installed and fixed by punching holes in the side wall. For example, the existing technology publication CN206722680U discloses an angle bracket and door / window assembly, including two interlocking angle bracket bases and two hollow pins. The angle bracket base is L-shaped and includes a first angle bracket wing, a second angle bracket wing connected to the first angle bracket wing, and a drainage groove. The outer surface of the first angle bracket wing has a first half-hole, and the outer surface of the second angle bracket wing has a second half-hole. The first and second half-holes are connected by the drainage groove. The drainage groove wall has glue-guiding holes. One end of the first angle bracket wing has a groove, and one end of the second angle bracket wing has a protrusion, with the groove and protrusion fitting together. However, traditional connection methods mostly use screw fixing or simple corner bracket insertion. Screw fixing is inefficient and requires high precision in the machining of screw holes, which can easily cause frame deformation. Simple corner bracket insertion relies on manual hammering to insert the bracket, which has limited connection strength and is prone to loosening during transportation and use due to vibration or temperature changes, resulting in gaps at the corners of the door and window frames, affecting sealing and overall stability. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a door and window frame plug-in component with a clever structure, firm connection, automatic locking function and convenient installation.

[0004] This utility model discloses a door and window frame plug-in assembly with self-locking function, including a plug-in body and a self-locking component; the plug-in body is L-shaped or cross-shaped, and its two or four plug-in arms are respectively used to insert into the end cavity of the door and window frame profile; the side wall of the plug-in arm is provided with a locking hole. The self-locking component is movably disposed inside the plug arm, and includes a locking block, an elastic element, and a triggering ramp; the locking block tends to partially extend out of the locking hole under the pre-tightening force of the elastic element; the triggering ramp is disposed at one end of the locking block facing the insertion direction of the plug arm.

[0005] Preferably, the plug arm has an installation cavity along its length, and the self-locking component is housed in the installation cavity.

[0006] Preferably, the elastic element is a compression spring, with one end abutting against the inner wall of the mounting cavity and the other end acting on the locking block.

[0007] Preferably, the portion of the locking block extending out of the locking hole is an arc surface or a slope, so as to be able to retract under pressure during the insertion process.

[0008] Preferably, it also includes a guide limiting structure, which includes a guide protrusion disposed on the locking block and a guide groove disposed on the inner wall of the mounting cavity, wherein the guide protrusion and the guide groove are slidably engaged.

[0009] Preferably, the corners of the connector body are provided with reinforcing ribs; this can greatly enhance the structural rigidity and stability of the connector when subjected to torque and pressure, and prevent corner cracking or deformation.

[0010] Preferably, the connector body is integrally injection molded from engineering plastic or made of metal material.

[0011] Compared with existing technologies, the advantages of this utility model are as follows: 1. Quick installation and automatic locking: When the connector is inserted into the profile cavity, the triggering inclined surface of the locking block is pressed when it contacts the inner wall of the profile, and the compression spring causes the locking block to retract; when it is inserted in place, and the locking hole is aligned with the pre-set hole on the inner wall of the profile (or directly by relying on the head of the locking block to be clamped on the inner wall of the profile), the locking block quickly pops out and locks in under the action of the spring, realizing automatic locking, effectively preventing the connector from loosening, and the installation process is completed in one step, which is extremely convenient; 2. The self-locking component is integrated inside the connector arm, which does not occupy extra space and is suitable for various standard door and window profile cavities. The guide limit structure ensures the reliability and consistency of the self-locking component's action; 3. Reduced costs and improved efficiency: The step of tightening screws is eliminated, which greatly improves the efficiency of door and window assembly, reduces labor costs and reliance on skilled workers. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the right-side cross-sectional structure of this utility model; Figure 3 This is a front cross-sectional structural diagram of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of Embodiment 2 (convex) of this utility model; Figure 5 This is a three-dimensional structural schematic diagram of Embodiment 2 (cross-shaped) of the present invention; The following are labels in the attached diagram: 1. Connector body; 101. Connector arm; 102. Locking hole; 103. Mounting cavity; 104. Reinforcing rib; 2. Self-locking component; 201. Locking block; 2011. Triggering ramp; 2012. Arc surface; 202. Compression spring; 203. Guide protrusion; 3. Guide groove. Detailed Implementation

[0013] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0014] like Figures 1 to 3 As shown, the device includes a connector body 1 and a self-locking component 2. The connector body 1 is an L-shaped connector used to connect two door / window frame profiles at a 90° angle. The connector body 1 is integrally injection molded from nylon and glass fiber material, and each of its two connector arms 101 has an installation cavity 103. The self-locking component 2 includes a locking block 201 and a compression spring 202. The locking block 201 has a trigger ramp 2011 at one end, an arc surface 2012 at the other end, and a guide protrusion 203 in the middle. The inner wall of the installation cavity 103 has a guide groove 3 that matches the guide protrusion 203. One end of the compression spring 202 abuts against the bottom of the mounting cavity 103, and the other end abuts against the locking block 201, so that the arc surface 2012 of the locking block 201 partially protrudes from the locking hole 102 on the side wall of the plug arm 101 in its natural state. When the frame is subjected to external force, the stress will be effectively transferred from one plug arm to the other plug arm through the 45-degree reinforcing rib, avoiding stress concentration at the vulnerable corner. Example 2

[0015] like Figure 4 and 5 As shown, the connector body 1 is convex and cross-shaped, used to connect three and four profiles; its working principle is exactly the same as that of the L-shaped one.

[0016] like Figures 1 to 5As shown, this utility model discloses a door and window frame plug-in assembly with a self-locking function. During assembly, the plug-in arms 101 of the plug-in component are aligned and inserted into the cavities at the ends of the door and window frame profiles. During insertion, the arc surface 2012 or triggering inclined surface 2011 of the locking block 201 first contacts the inner wall of the profile. After being compressed, the locking block 201 overcomes the elastic force of the compression spring 202 and retracts into the mounting cavity 103, allowing the plug-in arm to be smoothly inserted. When inserted into the designed position, the locking hole 102 is precisely aligned with the corresponding hole on the inner wall of the profile (or a recess that allows the head of the locking block to engage). At this time, the locking block 201 quickly pops out under the restoring force of the compression spring 202, and its head engages in the corresponding position, thereby firmly locking the plug-in component and the profile together, completing the installation. The entire process requires no tools and is quick and reliable.

[0017] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A door and window frame plug-in assembly with self-locking function, characterized in that, Includes the connector body (1) and the self-locking component (2); The connector body (1) has multiple connector arms (101), and locking holes (102) are provided on the side walls of the connector arms (101). The self-locking component (2) is disposed inside the plug arm (101) and includes a locking block (201) and an elastic element; the locking block (201) tends to partially extend out of the locking hole (102) under the pre-tightening force of the elastic element; a triggering inclined surface (2011) is provided at one end of the locking block (201) facing the insertion direction of the plug arm (101).

2. The door and window frame plug-in assembly with self-locking function as described in claim 1, characterized in that, The plug arm (101) has an installation cavity (103) along its length, and the self-locking member (2) is housed in the installation cavity (103).

3. A door and window frame plug-in assembly with self-locking function as described in claim 2, characterized in that, The elastic element is a compression spring (202), one end of which abuts against the inner wall of the mounting cavity (103), and the other end acts on the locking block (201).

4. A door and window frame plug-in assembly with self-locking function as described in claim 1, characterized in that, The portion of the locking block (201) extending out of the locking hole (102) is an arc surface (2012) that facilitates retraction under pressure.

5. A door and window frame plug-in assembly with self-locking function as described in claim 1, characterized in that, It also includes a guide limiting structure, which includes a guide protrusion (203) provided on the locking block (201) and a guide groove (3) provided on the inner wall of the mounting cavity (103), wherein the guide protrusion (203) and the guide groove (3) are slidably engaged.

6. A door and window frame plug-in assembly with self-locking function as described in claim 1, characterized in that, The corner of the connector body (1) is provided with reinforcing ribs (104).

7. A door and window frame plug-in assembly with self-locking function as described in claim 1, characterized in that, The connector body (1) is integrally injection molded from engineering plastic.

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